If this HSF is listed as HTPC-oriented, would it be possible to test it using a chip that is more related to an HTPC? The i7 920 is overkill for such an application.
As far as other HTPC / SFF HSFs go, there are very few but I do use a Thermalright AXP-140, cooling an AMD 720BE in my HTPC. It may not fit all SFF cases but it is a low-profile cooler.